Aphids, the general name for the insects of the genus Homoptera, which is widely distributed, diverse, hosted, and harmful, is one of the most destructive pests on the planet. Spring and summer are the main seasons for the growth and development of aphids, and they are also the main season for prevention and control.
1. Common species of mites
Common types are cotton aphid, peach aphid, long-term rose, cypress, pine, and white mites. Its host is heterozygous, widely distributed, multi-species, fast-growing, and highly harmful. It often gathers on the buds, flower buds, young leaves or twigs of plants, sucks plant juice with sharp mouthparts, and causes plant nutrient deterioration and growth. Slow, later causing growth malformations, defoliation, wilting and causing secondary plant virus pests, causing plants to die when severely ill.
Mainly harmful plants: rose, rose, purple leaf, peach, sea paulownia, compositae, pomegranate, eucalyptus, bamboo, etc.
2, the occurrence of aphids
Overwintering with eggs or mites (if 蚜) at weeds, bud bases, buds, branch scars, and trunk cracks. Hunchun wintering eggs hatch (wintering into the new shoots began to multiply), climb to the back of the young leaves (coniferous trees at the base of the leaves), April, May and October are the end of the hazard, severe leaves, tender The branches are covered with insects, and a large amount of excrement flows down, which is easy to cause coal pollution, and the leaves become black, which seriously affects photosynthesis and viewing. Winter begins in November.
3. Methods for controlling mites
(1) Artificially whitening the trunk before wintering until the wintering eggs hatch. Pruning branches and then burning or managing them in a concentrated way can eliminate a large number of wintering sources, save money and reduce environmental pollution.
(2) When the hazard is serious, spray with the diluted drug solution of sputum, focus on spraying the site of insect pests, and it is advisable not to drip the liquid. Apply once every 7-10 days, and use it for 2-3 times.
(3) Protecting natural enemies such as ladybugs and controlling aphids; in addition, adverse weather such as rainy days can also inhibit the damage of aphids, and the number of preventions can be appropriately reduced.
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